One vertex per element, one color per generator, with an edge from x to x·s.
(2,7)(3,9)(8,14)(10,15)(33,34)(35,39)(36,43)(37,40)(38,41)(42,47)(44,48)(45,46) involution — undirected(1,2,6,7)(3,5,9,13)(4,8,11,14)(10,12,15,16)(17,18,22,23)(19,24,29,32)(20,25,30,28)(21,26,31,27)(33,35,38,43)(34,39,41,36)(37,42,46,48)(40,47,45,44)(4,11)(8,14)(10,15)(12,16)(18,23)(20,30)(24,32)(26,27)(33,36,38,39)(34,35,41,43)(37,44,46,47)(40,42,45,48)(1,3)(2,5)(4,10)(6,9)(7,13)(8,12)(11,15)(14,16)(17,19)(18,24)(20,27)(21,25)(22,29)(23,32)(26,30)(28,31)(33,34)(35,36)(37,45)(38,41)(39,43)(40,46)(42,47)(44,48) involution — undirected(1,4,6,11)(2,8,7,14)(3,10,9,15)(5,12,13,16)(17,20)(18,25)(19,27)(21,24)(22,30)(23,28)(26,29)(31,32)(33,36)(34,35)(37,44)(38,39)(40,42)(41,43)(45,48)(46,47)(1,5)(2,9)(3,7)(4,12)(6,13)(8,15)(10,14)(11,16)(17,21)(18,26)(19,28)(20,24)(22,31)(23,27)(25,29)(30,32)(33,37)(34,40)(35,42)(36,44)(38,46)(39,47)(41,45)(43,48) involution — undirectedA Cayley diagram is a choice, not a fact about the group. Another drawing of this group — in a book, or on a different generating set — may look nothing like this one.